Intro

Professional software development workspace

I'm foremost a husband and father. Software has fascinated me since 2nd grade when I made simple games. That interest turned into over 15 years of professional software development across the full stack - from embedded systems to cloud infrastructure.

I founded Tietokanto Oy in 2022 to focus on what I do best: architecting and implementing scalable software systems, particularly for handling massive datasets. I've built data pipelines processing billions of rows, designed distributed systems, and optimized legacy software. The interesting part about optimization is that making software more efficient directly reduces compute resources needed - which means lower carbon footprint.

I do use AI tools in my work, but always with human oversight in the loop. Agentic development is still primarily suited for vibe-coding, which isn't my approach. There's also the consideration that AI tools can potentially waste significant amounts of energy, which conflicts with my focus on efficiency and reducing carbon footprint.

My toolbox includes Scala, Java, TypeScript, Python, and C++ for development. PostgreSQL and cloud-optimized PostgreSQL variants are my main databases, but I've worked with many others - Cassandra, Elasticsearch, ArangoDB. On the infrastructure side: AWS services, Terraform, Docker, Kubernetes. I've done full-stack web development with React, backend microservices with Spring and Akka, and DevOps automation.

The technologies vary by project, but the approach stays the same: understand the problem, choose the right tools, build systems that work efficiently and scale properly.

Work

References

HappyOrNot

HappyOrNot Logo

"Tietokanto Oy delivers excellent expertise crucial to our high-scale data platform. Their mastery of PostgreSQL optimization, Scala/Typescript backend development, and modern DevOps practices using Terraform is fundamental to HappyOrNot's continued scalability."

Experience

Tietokanto Oy (2022 - Present) - My own company focused on database architecture, administration and optimization. Helping clients handle billions of rows efficiently.

Paytrail (2022 - Present) - Database optimization and data-lake implementation.

HappyOrNot (2018 - Present) - Software Architect working on backend systems and AWS infrastructure. Built massive data storage solution on cloud-optimized PostgreSQL. Backend development with Scala and TypeScript.

Taidokas Oy (2019 - Present) - Founding member. Software architecture and backend development with Scala. AWS infrastructure with ECS Fargate, Docker, and Serverless.

Polar Electro (2017 - 2018) - Backend developer. Implemented GDPR data export system using Java Spring microservices, AWS, and Elasticsearch.

Protacon Group (2014 - 2017) - Software developer and architect. Built data analytics tools for manufacturing industry using C#, Microsoft SQL Server, Java, Akka, and Cassandra.

Contact

If you have data related software projects and/or problems and like what you see here, the best way to contact me is through LinkedIn.

Visit my LinkedIn profile